instruction:
Generate the answer for a given question. The question requires common knowledge of English. Make sure that the answer is in detail, long, consistent with the context, and requires general knowledge of English. To be less repetitive, please vary your language for each question. Give a proper explanation to answer, and if necessary, provide the definition of various terms. And conclude your answer if it's long. If you have used other resources (e.g., Merriam Webster's.) to answer the question, include citations in your answer. You don't need to paraphrase the context of your resources, but make sure that your answer is consistent and complete.
question:
Duplicate: What day is next Tuesday? I have always considered next Friday to be not this coming Friday, but the one after. This Friday is the Friday at the end of this week. I have a Canadian friend, however, who enforces the more literal meaning of next Friday the Friday that comes next. Is there a correct meaning for next Friday, or does this entirely depend on cultural differences?.
answer:
People generally understand next Friday as the Friday after this, that is, if you are on a Thursday, and someone tells you to meet him next Friday, it doesn't mean the next day, but rather, Friday week, the Friday after. Some pedantics will believe and argue that it is, as you say, the Friday that comes next. That is valid reasoning. However, if you want to be understood by the majority, 'next Friday' will mean Friday next week. So, in order to mean the Friday that actually comes next, you would say this Friday, but next Friday is generally understood by more people to mean the Friday after this.


question:
Variation lock seems more accurate by mathematical definitions Edit(to give it more context) Hey, can you tell me the combination of your lockbox ? Why don't we say variation(or permutation)? The order matters in this case and combination is an unordered set of numbers.
answer:
Because most people are not mathematicians. I know that sounds like a flippant answer, but it's genuinely the answer. There are many words which have a more precise (or even different) meaning for specialists, and the fact is that these words simply have both meanings. The question 'Is a tomato a fruit or a vegetable?' is an all too familiar example: to a botanist, it's a fruit; to most of us, it's a vegetable. So the fact that mathematicians use 'combination' in a more restricted way is irrelevant to almost everybody who uses the locks.


question:
I'm looking for an idiom or expression that means someone just makes frustrating or disappointing remarks. Maybe some of you have watched the TV cartoon 'The adventures of Gulliver' in which there was as a character named 'Glum'. He was all the time pessimistic about everything and used statements like: 'We'll never make it'; 'We'll never get out of here alive'; and 'We're doomed.' I want to use that idiom or expression in examples like this: Husband: After getting my promotion, I will take you to a fantastic trip. Wife: Oh, stop talking nonsense! I know It won't never happen, it's impossible you get a promotion. Husband: You remind me of 'Glum'! All the time _____ (i.e. acting like Glum, just having a gloomy outlook on everything). Please stop using such remarks and be a little optimistic! I have found wet blanket for describing such people. PS: We Iranians use an expression that literally says 'to read a frustrating or disappointing verse'. So in above example, the husband might reply like this: Hey Glum, the only thing you know is reading a frustrating/ disappointing verse! (Sometimes we call these people 'Glum'.).
answer:

I've got a gut feeling that this question is a duplicate, but 'naysayer' fits in your context: a person who habitually expresses negative or pessimistic views: 'Despite a general feeling that things were going well, a few naysayers tried to cast gloom. [Dictionary.com]


